-
-
-
-
Honor
-
-
-
-
-
Contact
-
The common reasons for drill pipe fracture are as follows
Release time:
2019-05-26
Author:
Source:
Shandong yi mining drilling technology co., ltd. production of drilling engineering dedicated to all kinds of geological drill pipe, spiral drill pipe, triangular drill pipe, coal drill pipe, drill bit, drill pipe, complete specifications! Strength manufacturers, trustworthy! company set research and development-production-sales-sales as one, welcome customers to purchase, tel: 0635-2311078
Drill pipe_is a steel pipe with a thread on the tail, used to connect the surface equipment of the drilling rig to the drilling equipment or bottom hole device located at the bottom of the well. The purpose of the drill pipe is to carry drilling mud to the drill bit and raise, lower or rotate the bottom hole device together with the drill bit. The drill pipe must be able to withstand large torques, twists, bends and vibrations during rotation. During the drilling process, the drill pipe can be used multiple times.
The common causes of drill pipe fracture are as follows:
1. Trenchless drill pipe is used for too long,More surface damage,Approaching or exceeding fatigue life. Replace new drill pipe in time.
2. The material and thickness of the drill pipe body do not meet the requirements of the technical specifications.
3. When reaming or long-distance drilling of guide holes,The drill suddenly hits a hard object to produce a strong impact. Cause a sudden increase in torque,The trenchless drill pipe is broken or twisted. The operator shall reasonably control the rotation speed and propulsion force when operating the trenchless drilling rig.,To avoid this kind of situation, drill and pressurize, and drill forward at a suitable rotation speed.
4. The parameter that the radius of curvature of the construction hole exceeds the minimum radius of curvature of the drill pipe controls the minimum radius of curvature of the construction hole.
5. The surface of the drill pipe body is seriously scratched to avoid using the drill pipe with scars.
6. The torque of the drilling rig is greater than the torque of the drill pipe inclination. Proper drill pipe for the rig.
7. Pair position. Do not form the operation of the drill pipe, but be careful not""Don't.""Drill pipe.
8,Release the drill. Under the action of the gravity of the drill pipe and the drilling tool, the process of overcoming the friction force of the hole wall and the mud buoyancy to achieve the extension of the drill pipe is called drilling.
9,The correct drilling sequence is: the outer rod is lowered into place, and the adjacent inner rod starts to extend from the inner of the outer rod, from the outside to the inside, one by one.
Key words:
Drill pipe
Previous Page
Next Page
Previous Page:
Next page:
